Abstract:
For monitoring of permafrost temperature, this 10m deep borehole was drilled in Adventdalen, next to the old, dry river channel from Todalen. The channel collects snow in winter while the surface at the borehole site is kept more or less snowfree by wind action. An automatic camera is used to monitor the snow cover. Stratigraphy: 0-2m: Till. Possibly silt and clay layers from 1.5m. Some ice 1-1.5m. Ice-rich 1.5-2m. 2-3.3m: Ice-rich (~50%) and silt/clay layers. A few thin coarser layers 3.3-4m: Coarser and less ice. 4-6m: Some ice (less with depth). Silt/clay layers in coarser (gravel) material. 6-10m: silt/sand/(clay). Increasing plasicity with depth.